Popular (jouyou) Kanji are highlighted.
Note that English meaning under each Kanji is just one of many other possible senses.
虫
insect
䖝insects
虬young dragon
虯young dragon
虵 虱lice
虻gadfly
虶 虷worm
虺large poisonous snake
虹rainbow
蝉cicada
蚕silkworm
蚍mussels
蚑tip-toe
蚖 蚘tapeworm
蚚 蚜plant louse
蚡mole
蚦boa constrictor
蚇 蚧red spotted lizard (used as medicine)
蚉 蚨kind of water-beetle cash
蚝hairy and poisonous caterpillars
蚤flea
蚓earthworm
蚣centipede
蚩fool
蚪tadpole
蚋gnat
蚌clam
蚊mosquito
蛎oyster
蚭 蚱grasshopper
蚳ant eggs
蚴 蚵oyster
蚷 蚸 蚹 蚿millipede
蛀insects that eat books
蛁 蛃 蛅caterpillar
蛇snake
蛍lightning-bug
﨡 蚶ark shell
蚯earthworm
蛄mole cricket
蛆worm
蚰millipede
蛉dragonfly
蚫abalone
蛞kind of slug
蛩cricket
蛬cricket
蛟dragon
蛛spider
蛯shrimp
蛮barbarian
蛙frog
蛭leech
蛦 蛑marine crab
蛒 蛕the common intestinal worms
蛗 蛚 蛜 蛠 蛣(dung) beetle
蛥 蛧 蚈 蛤clam
蛔intestinal worms